Monochrome shadow artifacts

Almost parallel to surface sun rays produce shadow artifacts in Monochrome, the same settings work fine with Rendered mode.

Monochrome.3dm (481.9 KB)

System Info

Rhino 8 SR5 2024-2-13 (Rhino 8, 8.5.24044.18001, Git hash:master @ 3070dad8e8cced9e1b333ad92cd445f22730c23e)
License type: Commercial, build 2024-02-13
License details: Cloud Zoo

Windows 11 (10.0.22631 SR0.0) or greater (Physical RAM: 64GB)
.NET Framework 4.8.9181.0

Computer platform: LAPTOP - Plugged in [97% battery remaining]

Non-hybrid graphics configuration.
Primary display and OpenGL: NVIDIA RTX A3000 12GB Laptop GPU (NVidia) Memory: 11GB, Driver date: 5-24-2023 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 535.98
> Integrated accelerated graphics device with 4 adapter port(s)
- Windows Main Display is laptop’s integrated screen or built-in port
Primary OpenGL: NVIDIA RTX A3000 12GB Laptop GPU (NVidia) Memory: 11GB, Driver date: 5-24-2023 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 535.98
> Integrated accelerated graphics device with 4 adapter port(s)
- Windows Main Display is laptop’s integrated screen or built-in port

Secondary graphics devices.
Intel(R) UHD Graphics (Intel) Memory: 1GB, Driver date: 6-15-2023 (M-D-Y).
> Integrated graphics device with 4 adapter port(s)
- Secondary monitor is laptop’s integrated screen or built-in port

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)

Anti-alias mode: 8x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 5-24-2023
Driver Version: 31.0.15.3598
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 11520 MB

Rhino plugins that do not ship with Rhino
C:\ProgramData\McNeel\Rhinoceros\7.0\Plug-ins\Datasmith Rhino Exporter (d1fdc795-b334-4933-b680-088119cdc6bb)\DatasmithRhino7.rhp “Datasmith Exporter” 5.3.2.0
C:\Program Files\Rhino 8\Plug-ins\Tibidabo\VisualARQ.rhp “VisualARQ”
C:\Users\Czaja\AppData\Roaming\McNeel\Rhinoceros\8.0\Plug-ins\Bella (813de3fb-18eb-405f-bfcd-b0b4d3da91fb)\23.6.0.0\bella_rhino.rhp “Bella” 23.6.0.0
C:\Users\Czaja\Desktop\Rhino_7_Win_2023.0417\HDRLightStudioTexture.rhp “HDRLightStudioTexture”
C:\Program Files\Rhino 8\Plug-ins\Tibidabo\Tibidabo.rhp “Tibidabo”
C:\Program Files\Common Files\McNeel\Rhinoceros\8.0\Plug-ins\Crayon (39629248-4fa6-47b8-83c7-745a7efea259)\1.2.0.0\Crayon\Crayon.rhp “Crayon” 1.0.0.0

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 8\Plug-ins\Commands.rhp “Commands” 8.5.24044.18001
C:\Program Files\Rhino 8\Plug-ins\WebBrowser.rhp “WebBrowser”
C:\Program Files\Rhino 8\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 8\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Program Files\Rhino 8\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 8.5.24044.18001
C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 8.5.24044.18001
C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp “MeshCommands” 8.5.24044.18001
C:\Program Files\Rhino 8\Plug-ins\IronPython\RhinoDLR_Python.rhp “IronPython” 8.5.24044.18001
C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp “RhinoCycles” 8.5.24044.18001
C:\Program Files\Rhino 8\Plug-ins\RhinoCode\RhinoCodePlugin.rhp “RhinoCodePlugin” 8.5.24044.18001
C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 8.5.24044.18001
C:\Program Files\Rhino 8\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 8\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 8\Plug-ins\SectionTools.rhp “SectionTools”

Monochrome

Rendered

settings

Bigger scene - bigger artifacts